Manifolding device for type-writers



2 sheets-sheet l1.

(No Model.)

MANIFOLDINGEVIGE POR TYP-B WRITERS.

No. 507,189.` Patented ont. 24, 1893.

f-IESSBS ATTRNEYS.

(Nolmordfel.) 2 sheets-sheet 2.-

E.- E.l UNZ. MANIEGL'DING DEVICE. EOE TYPE WEIIEES.- No. 507,189; yPatented Oct. 24, 1893.

FIG' 9 NITE STATES HENRY H. UNZ, OF NEW YORK, N. Y., ASSIGNOR TO THENATIONAL TYPE WRITER COMPANY, OF PENNSYLVANIA.

MANIFOLDING DEVICE FOR TYPE-WRITERS.

SPECIFICATION forming part Of Letters Patent NO. 507,189, dated. October24, 1893.

Application tiled November 7, 1885. Serial No. 182,111. (N o model.)

To all whom it may concern:

Be it known that I, HENRY H. UNZ, of New York, in the county of New Yorkand vState of New York, have invented a new and Improved ManifoldingDevice for Type-Writers, of which the following is a specification,reference being had to the annexed drawings, forming a part thereof, inwhich- Figure lis a side elevation of a spirally ribbed roller, adaptedto be used in a type writer, in lieu of the ordinary rubber faced rollercommonly used in type writers. Fig. 2 is a transverse section taken online oc in Fig. l. Fig. 3 is a modified form of the device shown in Fig.l. Fig. 4 is a transverse section taken on line y y in Fig. 3. Fig. 5 isa face view of the diagonally ribbed surface. Fig. 6 represents anenlarged letter formed of the diagonal slits. Fig. 7 shows a part of aroller with a iile cut surface, and Fig. 8 is a detail view of the lesurface. Fig. 9 represents a section showing the printing mechanism andplaten.

Similar letters of reference indicate corresponding parts in thedifferent figures.

The object of my invention is to provide for type Writing machines adevice, whereby the ordinary operation of type writing may be made toproduce a stencil, which may be used in a stencil press, for makingmanifold copies of manuscript produced by typewriters.

My invention consists in a roughened or diagonally or spirally ribbedsurface, which I substitute for the ordinary platen, or rubber facedroller of a typewriter, and by which, under the impact of the type ofthe type writer, minute slits will be made in the paper,

which render it efficient as a stencil for producing manifold copies bythe usual well known method.

In carrying out my invention,I remove the ordinary rubber faced rollerof the type writing machine, and substitute therefor a metal facedroller A, having formed thereon spiral ribs a., which are sufficientlynear together to produce within the borders of any one letter orcharacter formed by the type writer, a series of minute diagonal slitsin the paper, when the paper is forced against the ribbed surface of theroller by the impact of the type of the type writing machine.

In Fig. 9, A is the platen, E the type-operating key, F the type bar,and G the type.

I do not intend to limit myself to the particular printing mechanismshown in Fig. 9, as it is apparent that any of the well known printingmechanisms used in type-writers may replace that shown in the drawings,Fig. 9, without deviating from the invention.

The inclination of the spiral ribs to the axis of the roller is aboutthirty degrees; but I do not limit or confine myself to any particularangle for these ribs, the only requirement being, that the slitsproduced by the ribs, cross the letter at such an angle, as to make theshortest slits possible in a given letter; and so as not to make slitsparallel with any of the longer lines of the letters or characters.

I have found by experiment that ribs one one-hundredth of an inch apartanswer for ordinary work, but they may be nearer together, or fartherapart according to the requirements of the work to be done.

I preferably form the roller of steel, or of a steel shell surrounding acore of lighter material, and I make the spiral ribs by the process ofknurling, or by cutting in a milling machine, or in any other convenientway; but I may provide a roughened or file cut roller A', as shown inFig. 7.

To protect the types of the type writing machine from injury by theribbed rollerA, and also to guard against injury to the ribs of saidroller A, I provide a strip b of soft rubber or similar material whichis interposed between the type and paper employed for making thestencil.

The roughened or spirally ribbed roller A is to be used in the typewriter in substantially the same manner as the rubber faced rollers arenow used; and when it is not desired to use the type writer forproducing a manifoldin g sten cil, a suitable backing may be placedbetween the paper c and the roller, so that the paper will not be cut bythe ribs of the roller.

Instead of employing a cylindrical spirally ribbed or roughened rollerA, or A', I may,

with the same advantage employ a section of a roller, or a bar B,roughened, or having formed thereon diagonal ribs, as shown in Figs. 3and 5. This bar is supported on the shaft C by arms d and hangs by itsown gravity in position to be engaged by the types of the type Writer,in the manner already described, in connection with the roller shown inFig. 1.

To support the paper c in the proper position, relative to the type, andthe diagonally ribbed bar B, I pro-impression.

Having thus described my invention, what I claim as new, and desire tosecure by Letters Patent, is-

The combination with the printing mechanism of a type-Writing machine ofa platen having a hard roughened surface, and an elastic stripinterposed between said platen and printing mechanism.

HENRY Il. UN Z.

Witnesses:

GEO. M. HOPKINS, C. SEDGWICK.

